Town councillor Stan Zalot said plans to move residents from the residential home and into other accommodation were “outrageous”.

He added: “They say they want individual units on land they own in the Beaumaris area. They’re talking about 40 independent units.”

Speaking after the town council meeting, Cllr Carwyn Jones said: “I hope to see Haulfre open for the next 30 years, not three. It’s a fantastic care home and has glowing reviews from residents and their families.

“We will do everything possible to ensure we fight for Haulfre’s future. I think we should keep the site and invest so that we can offer more.

“I want to see an end to the uncertainty around the care home. The council should come out and secure the future of Haulfre.”

Cllr Alwyn Rowlands, who also represents the Seiriol ward on the county council, said a time will come when adult care in Anglesey has to be modernised.

He said: “Nothing is forever. Haulfre won’t be closed until something else is in place which is equal or better. If there are changes, it will be part of modernisation across Anglesey.”

Anglesey council is seeking to develop more care at home for the elderly and reduce dependence on the island’s six council-run residential homes, which will be adapted to house residents needing specialist care for conditions like dementia.

A spokesman for the county council said: “There are no plans to close Haulfre within three years.

“The authority plans to undertake a comprehensive future needs analysis in the Seiriol area. We will be in a better position to gauge the long-term care provision for the area once this work has been completed.

“What is likely is that, over the next year, there will be discussion about how needs can best be met in Seiriol as well as elsewhere on the island. There will be discussion and possibly decisions about what will be the best option for the future, and this would undoubtedly include consideration of the role of Haulfre.”